Boring tool
AssigneeDaishowa Seiki Co., Ltd.
InventorTatsuya Ogata
Life of this patent
Estimating the term…
Abstract
Provided is a boring tool capable of suppressing wear of a cutting blade according to a shape of a bore to be formed in a workpiece. The tool includes a tool body to be attached to a spindle of a rotary machining tool, and a plurality of cartridges each attached to a leading end face of the tool body, having a cutting blade and being position-adjustable in a radial direction. The tool body has a coolant passage for transporting coolant along a rotational axis direction. A discharge hole for the coolant is comprised of a first discharge hole provided between the plurality of cartridges in a leading end face and a second discharge hole provided in an outer circumference of the tool body and directed toward the cutting edge of the cutting blade.
Claims13
A boring tool comprising:
- a tool body to be attached to a spindle of a rotary machining tool;
- and
- a plurality of cartridges each attached to a leading end face of the tool body, having a cutting blade and being position-adjustable in a radial direction;
- wherein the tool body has a coolant passage for transporting coolant along a rotational axis direction;
- a discharge hole for the coolant communicates with the coolant passage and is comprised of a first discharge hole provided to be positioned between the plurality of cartridges in the leading end face;
- and
- at least one of the plurality of cartridges includes a communication portion which is a recess in an external surface of the respective cartridge along the rotational axis direction for communicating the coolant discharged from the first discharge hole, irrespective of an adjustable position of the cartridge.
A boring tool comprising:
- a tool body to be attached to a spindle of a rotary machining tool;
- and
- a plurality of cartridges each attached to a leading end face of the tool body, having a cutting blade and being position-adjustable in a radial direction;
- wherein the tool body has a coolant passage for transporting coolant along a rotational axis direction;
- a discharge hole for the coolant communicates with the coolant passage and is comprised of a first discharge hole provided to be positioned between the plurality of cartridges in the leading end face and a second discharge hole provided in an outer circumference of the tool body and directed toward a cutting edge of the cutting blade;
- the first discharge hole and the second discharge hole are provided respectively with an adjusting mechanism for adjusting a respective coolant discharge amount of the first discharge hole and the second discharge hole;
- and
- at least one of the plurality of cartridges includes a communication portion which is a recess in an external surface of the respective cartridge along the rotational axis direction for communicating the coolant discharged from the first discharge hole, irrespective of an adjustable position of the cartridge.
Dependencies are inferred from the claim text.